In the first of the In the Line of Duty series by Cathryn Fox, there is an emphasis on the best friend's little sister trope. Cole Sullivan made a promise to a dying man to protect his younger sister from harm. When he finally returns home after a long absence, he goes to see Gemma Matthews, effectively putting himself back into her life with little choice.

Though Gemma has harboured feelings for Cole for all her life, her efforts to seduce him have gone unnoticed to her knowledge because of the fact that they are life-long friends. However, it is clear that as Gemma becomes more comfortable in her own skin that Cole is having a harder time keeping his hands to himself. In this charming and sexy story of seduction, Fox infuses the book with a little teasing, a lot of sexiness and passion.

I find that Fox's writing is easy to read. It flows so eloquently with little effort on the part of the reader, making for a very pleasant experience. HIS OBSESSION NEXT DOOR is a sexy, satisfying story of newfound love.